Copper Patina Process

This part is important since all of these things will interfere with the patina process.

Copper patina process. Then add to remaining water. The chocolate brown film of copper oxide advances the patination process and provides architects with a different colour option to the bright new copper. Liquid metal copper entrance door by camel glass going through the copper patina process timelapsed.

After the sanding was finished up I moved on to giving all of the sheets a good washing with soap and water to get all of the grit grime and oils off. The patina is a combination of copper salts that are unreactive and protect the copper from further corrosion. But how does patina form.

Formation of a Copper Patina. Its a process like rusting which is caused when iron is exposed to oxygen and water. Natural oxidation of copper occurs as a result of exposure to atmospheric elements such as acidic rain carbon dioxide oxygen and other sulfur bearing compounds.

The patina process starts the minute the copper is exposed to air and moisture and over time a very thin layer of corrosion develops on the copper which helps protect it against the elements and degradation. The copper patina that accumulates on copper roofing is a natural process resulting over time with exposure to the atmosphere. While it usually refers to a chemical process a patina can mean any aging process that causes natural discoloration or fading.

Copper reacts to rain and moisture in the air turning the bright shiny metal into a darker graybrown and eventually to some shade of green. Cuprum and atomic number 29. Chemical Reactions in Patina As copper experiences natural or human-induced corrosive attack its color changes from the iridescent golden red normally associated with pure copper to a deep brown and finally to hues of blue and green.

A day or two after the patina process when the patina is finished and dry seal it using a clear spray lacquer. It determines the color the pattern even the time it takes for the patina to develop. Known as patination the process can take many years.